用于修饰或说明其中具有多个数据终端的一种通信网络。 Pertaining to a communications network having several data terminals.
欧姆电阻单位，一段导体两端的电位差为伏特时产生一安培电流，那么这段导体的电阻就等于欧姆 A unit of electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals.
说明包含或支持（通常理解为在同一地点而不是由通信链路连接）多个终端的设施等。 Including or supporting more than one terminal(usually understood to beat the same location rather than joined by communications links).